681487117 has 8 divisors (see below), whose sum is σ = 734852160. Its totient is φ = 629871840.

The previous prime is 681487099. The next prime is 681487133. The reversal of 681487117 is 711784186.

681487117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 681487117 - 2²³ = 673098509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681487717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436633 + ... + 438190.

It is an arithmetic number, because the mean of its divisors is an integer number (91856520).

Almost surely, 2^681487117 is an apocalyptic number.

It is an amenable number.

681487117 is a deficient number, since it is larger than the sum of its proper divisors (53365043).

681487117 is a wasteful number, since it uses less digits than its factorization.

681487117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874883.

The product of its digits is 75264, while the sum is 43.

The square root of 681487117 is about 26105.3082149972. The cubic root of 681487117 is about 880.0065069250.

The spelling of 681487117 in words is "six hundred eighty-one million, four hundred eighty-seven thousand, one hundred seventeen".